A survey of processes for producing hydrogen fuel from different sources for automotive-propulsion fuel cells

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Description

Seven common fuels are compared for their utility as hydrogen sources for proton-exchange-membrane fuel cells used in automotive propulsion. Methanol, natural gas, gasoline, diesel fuel, aviation jet fuel, ethanol, and hydrogen are the fuels considered. Except for the steam reforming of methanol and using pure hydrogen, all processes for generating hydrogen from these fuels require temperatures over 1000 K at some point. With the same two exceptions, all processes require water-gas shift reactors of significant size. All processes require low-sulfur or zero-sulfur fuels, and this may add cost to some of them. Fuels produced by steam reforming contain {approximately}70-80% hydrogen, ... continued below

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60 p.

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Brown, L.F. March 1, 1996.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 19 times . More information about this report can be viewed below.

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Description

Seven common fuels are compared for their utility as hydrogen sources for proton-exchange-membrane fuel cells used in automotive propulsion. Methanol, natural gas, gasoline, diesel fuel, aviation jet fuel, ethanol, and hydrogen are the fuels considered. Except for the steam reforming of methanol and using pure hydrogen, all processes for generating hydrogen from these fuels require temperatures over 1000 K at some point. With the same two exceptions, all processes require water-gas shift reactors of significant size. All processes require low-sulfur or zero-sulfur fuels, and this may add cost to some of them. Fuels produced by steam reforming contain {approximately}70-80% hydrogen, those by partial oxidation {approximately}35-45%. The lower percentages may adversely affect cell performance. Theoretical input energies do not differ markedly among the various processes for generating hydrogen from organic-chemical fuels. Pure hydrogen has severe distribution and storage problems. As a result, the steam reforming of methanol is the leading candidate process for on-board generation of hydrogen for automotive propulsion. If methanol unavailability or a high price demands an alternative process, steam reforming appears preferable to partial oxidation for this purpose.

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60 p.

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OSTI as DE96008173

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  • Other Information: PBD: Mar 1996

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  • Other: DE96008173
  • Report No.: LA--13112-MS
  • Grant Number: AC02-90CH10435
  • DOI: 10.2172/212711 | External Link
  • Office of Scientific & Technical Information Report Number: 212711
  • Archival Resource Key: ark:/67531/metadc668513

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  • March 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • Feb. 26, 2016, 6:35 p.m.

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Brown, L.F. A survey of processes for producing hydrogen fuel from different sources for automotive-propulsion fuel cells, report, March 1, 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc668513/: accessed August 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.